Number Talk with Pre-service: Tens Frames
My pre-service teachers and I had did a Number Talk involving tens frames. Since we have not had a Number Talk in the couple of weeks, I found it befitting to have one now. The topic for todays class was early number sense and place value. Core part of early number sense is the ability recognize landmark or benchmark numbers, and being able to visualize numbers as one unit or unitize (Boreman & Rucker). The Number Talk session picture is below. Pre-service teachers were shown the image for 3 seconds. They had to remember the number of dots they saw, and how they saw it. Pre-service teachers immediately saw there were 12 dots. However, how they saw the 12 dots were different. The following is a dialogue of the number talk: PRT One: I saw groups of threes. Me: How did you see the groups of three? PRT One: 3 at the top left. 3 at the top right. 3 more bottom left. 3 at bottom right. 3, 6, 9, 12. I brought the point that we want to subitize quantities. Subitize is the ability t